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    Cabinet Requirements for an EX Series Redundant Power System Redundant Power System

    You can mount the Redundant Power System (RPS) in a cabinet that contains a 19-inch rack.

    Cabinet requirements consist of:

    • Cabinet size
    • Clearance requirements
    • Cabinet airflow requirements

    Table 1 provides the cabinet requirements and specifications for the RPS.

    Table 1: Cabinet Requirements and Specifications for the RPS

    Cabinet Requirement

    Guidelines

    Cabinet size

    • You can mount the RPS in a cabinet that contains a 19-in. rack.

      Note: The rack must meet the strength requirements to support the weight of the RPS.

    • The minimum cabinet size must be able to accommodate the maximum external dimensions of the RPS.

    Cabinet clearance

    • The outer edges of the mounting brackets extend the width of the chassis to 19 in. (48.3 cm).
    • The minimum total clearance inside the cabinet is 30 in. (76.2 cm) between the inside of the front door and the inside of the rear door.

    Cabinet airflow requirements

    When you mount the RPS in a cabinet, ensure that ventilation through the cabinet is sufficient to prevent overheating.

    • Ensure adequate cool air supply to dissipate the thermal output of the RPS.
    • Ensure that the cabinet allows the power supply hot exhaust air to exit the cabinet without recirculating into the RPS. An open cabinet (without a top or doors) that employs hot air exhaust extraction from the top allows the best airflow through the chassis. If the cabinet contains a top or doors, perforations in these elements assist with removing the hot air exhaust.
    • Install the RPS in the cabinet in a way that maximizes the open space on the side of the chassis that has the hot air exhaust. This maximizes the clearance for critical airflow.
    • Route and dress all cables to minimize the blockage of airflow to and from the chassis.
    • Ensure that the spacing of rails and adjacent cabinets allows for the proper clearance around the RPS and cabinet.
    • A cabinet larger than the minimum required provides better airflow and reduces the chance of overheating.

    Published: 2012-08-13